Deploy Springboot Microservices App into Amazon EKS Cluster using Jenkins Pipeline
Containerize Springboot App and Deploy into EKS Cluster using Jenkins Pipeline
Table of contents
- Pre-requisites:
- Let's Create a Pipeline:
- Step # 1 - Create Maven3 variable under Global tool configuration in Jenkins
- Step #2 - Create Credentials for connecting to Kubernetes Cluster using kubeconfig
- Step # 3 - Create a pipeline in Jenkins
- Step # 4 - Copy the pipeline code from below:
- Step # 5 - Build the pipeline
- Step # 6 - Verify deployments to K8S
- Step # 7 - Access SpringBoot App in the K8S cluster.
We will learn how to automate spring-boot microservices builds using the Jenkins pipeline and Deploy it into AWS EKS Cluster with the help of the Kubernetes CLI plug-in.
We will use Springboot Microservices-based Java application. I have already created a repo with source code + Dockerfile. The repo also has Jenkinsfile for automating the following:
- Automating builds using Jenkins
- Automating Docker image creation
- Automating Docker image upload into AWS ECR
- Automating Docker Containers Deployments to Kubernetes Cluster
Make sure you fork my repo: github.com/Biswajit-Mohapatra2/My-SpringBoo..
Pre-requisites:
1. Amazon EKS Cluster is set up and running. Click here to learn how to create an Amazon EKS cluster.
2. Create an ECR repo in AWS
4. Docker installed on the Jenkins instance
5. Docker, Docker pipeline and Kubernetes CLI plug-ins are installed in Jenkins
- Install kubectl on your instance.
Let's Create a Pipeline:
Step # 1 - Create Maven3 variable under Global tool configuration in Jenkins
Make sure you create a Maven3 variable under the Global tool configuration
Step #2 - Create Credentials for connecting to Kubernetes Cluster using kubeconfig
Click on Add Credentials, and use Kubernetes configuration from the dropdown.
use a secret file from the drop-down.
Execute the below command to log in as jenkins user.
sudo su - jenkins
You should see the nodes running in the EKS cluster.
kubectl get nodes
Execute the below command to get kubeconfig info, and copy the entire content of the file:
cat /var/lib/jenkins/.kube/config
Open your text editor or notepad, copy and paste the entire content and save in a file. We will upload this file.
Enter ID as K8S and choose File and upload the file and save.
Enter ID as K8S and choose to enter directly and paste the above file content and save.
Step # 3 - Create a pipeline in Jenkins
Create a new pipeline job.
Step # 4 - Copy the pipeline code from below:
Make sure you change the yellow highlighted values below as per your settings:
Your docker user id should be updated.
your registry credentials ID from Jenkins from step # 1 should be copied.
pipeline {
tools {
maven 'Maven3'
}
agent any
environment {
registry = "account_id.dkr.ecr.us-east-2.amazonaws.com/my-docker-.."
}
stages {
stage('Cloning Git') {
steps {
checkout([$class: 'GitSCM', branches: [[name: '*/main']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: '', url: 'github.com/Biswajit-Mohapatra2/My-SpringBoo..']]])
}
}
stage ('Build') {
steps {
sh 'mvn clean install'
}
}
// Building Docker images
stage('Building image') {
steps{
script {
dockerImage = docker.build registry
}
}
}
// Uploading Docker images into AWS ECR
stage('Pushing to ECR') {
steps{
script {
sh 'aws ecr get-login-password --region us-east-2 | docker login --username AWS --password-stdin account_id.dkr.ecr.us-east-2.amazonaws.com'
sh 'docker push account_id.dkr.ecr.us-east-2.amazonaws.com/my-docker-..
}
}
}
stage('K8S Deploy') {
steps{
script {
withKubeConfig([credentialsId: 'K8S', serverUrl: '']) {
sh ('kubectl apply -f eks-deploy-k8s.yaml')
}
}
}
}
}
}
Step # 5 - Build the pipeline
Once you create the pipeline and changes values per your configuration, click on Build Now:
Step # 6 - Verify deployments to K8S
kubectl get pods
kubectl get deployments
kubectl get services
Step # 7 - Access SpringBoot App in the K8S cluster.
Once the build is successful, go to the browser and enter the master or worker node public IP address along with the port number mentioned above
You should see a page like below:
Note:
Make sure you fork my repo github.com/Biswajit-Mohapatra2/My-SpringBoo.. and make changes in eks-deploy-k8s.yaml to pull Docker image from your AWS ECR repo.
cheers🤟
